1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
makvit [3.9K]
3 years ago
5

Can somebody help teach me how to solve quadratic equations? I have no idea what to plug in. Here are some examples of what I ne

ed to solve (attached). Any help would be appreciated!

Mathematics
1 answer:
guapka [62]3 years ago
4 0
The best method that will work for any quadratic equation is to use the quadratic formula: x = (-b±√(b² - 4ac))/2a, this will work for any quadratic of the form ax² + bx + c = 0.

As for the last equation in the attachment, that is a cubic equation, these are much trickier to solve and as such the formula is much longer and very complicated. Therefore it is easier to see if it can be broken down into a linear term and a quadratic. This can be done by substituting integer values of x into the equation to see if it holds true. If both sides of the equation are equal for a given value of x then the equation ax³ + bx² + cx + d can be rewritten as (Ax + B)(px² + qx + r). This can then be put into the quadratic formula mentioned above.
You might be interested in
Say a random useless fact
SSSSS [86.1K]

Answer:

We believe in improving school management through service and technology, and we’ve never lost sight of our goal — to help schools, administrators, teachers, and families solve the unique challenges they face.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What’s the simplest from of 21:28
Komok [63]
The simplest form of 21:28 is 3:4. you just divide both numbers by the greatest common factor.
6 0
3 years ago
Read 2 more answers
Is y=1/4x^0.5 a power function? Explain your reasoning.
ki77a [65]
Yes because the general form of a power function is f(x)=cx^p, where c and p are real numbers. Since the function satisfies this form, the function is a power function. 
5 0
3 years ago
Read 2 more answers
if a 14 foot tree casts a 8 foot long shadow. how tall is a tree that casts a 4 foot long shadow?
kvasek [131]

7-foot

EXPLANAT

Given:

14 foot tree

8foot shadow

4foot shadow

Let h be the height of a tee that casts a 4 foot long shadow.

Using proportion;

14 foot = 8 ft shadow

h = 4 ft shadow

Cross - multiply

8h = 56

Divide both-side by 8

h = 7 foot.

Hence, the tree is 7-foot.

4 0
1 year ago
Ryan bought fishing gear, they cost 51.50,14.99,and 5.79. The sales tax was calculated by multiplying the total cost of the fish
wlad13 [49]

Answer: 76.28 approximately 76

Step-by-step explanation:

Ryan bought fishing gear for 51.50, 14.99 and 5.79.

Total fishing gear bought will be the addition of the 3 fishing gear.

51.50 + 14.99 + 5.79= 72.28

The sales tax is the multiplication of the total fishing gear by 0.05

= 72.28 × 0.05

= 3.614 which is approximately 4

Amount paid by Ryan will be

Total fishing gear + Sales tax

= 72.28 + 4

= 76.28 approximately 76.

3 0
3 years ago
Other questions:
  • Hey there!<br><br> Can I get some help please ? Thanks!
    6·1 answer
  • Evaluate 8a+3b-10+c^28a+3b−10+c ​2 ​​ 8, a, plus, 3, b, minus, 10, plus, c, start superscript, 2, end superscript when a=2a=2a,
    7·1 answer
  • Could anyone help me with this? I will mark you as brainliest!
    13·2 answers
  • find the sum of even numbers between 1001 and 10,000 (Arithmetic progressions) DO STEP BY STEP PLEASE ​
    12·1 answer
  • PLEASE HELP ME IT HAS BEEN A VERY ROUGH MORNING THANK YOU!
    12·1 answer
  • In the function y=2-5x, what is f(3)?​
    10·1 answer
  • To whoever is helping me tysm &lt;33333333333333333333333333333
    14·1 answer
  • F(x)=3x^0.4 find f(32)
    14·1 answer
  • A tangent to a circle passes through the center of the circle<br>True<br>false<br>sometimes true​
    6·1 answer
  • Where do you put smart hot dogs riddle
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!